Apparatus for ozonizing atmospheric air.



No. 829,790. PATENTED AUG. 28, 1906. E. L. JOSEPH.

APPARATUS FOR OZONIZING ATMOSPHERIC AIR.

APPLICATION FILED DEC.12.1905.

3 SHEETSSHEET l.

WWI 3859 STATES PATENT OFFICE.

EDWARD LIONEL-JOSEPH, OF LONDON, ENGLAND.

APPARATUS FQR OZONIiING ATMOSPHERIC AIR.

. Specification of Letters Patent. Application filed December 12, 1905. Serial No. 291,400.

Patented Aug. 28, 1996.

' To all whom it may concern:

Be it known that I, EDWARD LIONEL JOSEPH, electrical engineer, a subject of the This invention relates, to' apparatus for ozoniz' atmospheric air by the silent discharge a hi "h-tension electric current; and it hasfor its 0 jec't more particularly to pro- 'vide a com act, self-contained, and portable machine which shall be free from liability to cause annoyance by the transmission of vibrations andwherein all the moving parts are so housed as to be inaccessible to unauthorized persons. Y

g The apparatus may be used with either an alternating or a direct current, a motortransformer being in the latter case employed' to convertthe direct current into an alternating current. In the following description it is assumed that the apparatus is used with a course of direct-current supply. In the accom anying drawings, which illustrate the pre erred form of the apparatus, Figure 1 is a longitudinal vertical section of the machine, and Fig. 2 is a perspective view ofthe same, parts bein broken away in the latter figure to show t e construction.

Fig. 3 is a diagram of the electrical connections. 1 isthe outer casing of the apparatus, consisting of a rectangular wooden ox, whereof the rear end is closed by a filter or drying medium 2 for the air which through it enters the apparatus, this filter being formed of a layer of cotton wool or other suitable material inclosed in a wireworli-fram'e attached to the casing 1 around the rear opening of the latter and which if hinged thereto would be secured by a lock. The opposite or front end'of the casing 1 is covered by an open screen 3, of wirework, likewise secured to the casing and adapted while giving passage to the a1r issuing from the ap aratus to prevent access to the interior of t e latter by unauthorized persons.

In the interior of the casing 1 is fixed a transverse partition 4, having a circular aperture 5 of relatively large area, wherein an air-propelling fan 6 is mounted to rotate upon a horizontal axis in such a direction as to cause atmospheric a1r to be drawn into the casing through the filter.2 and expelled,

as hereinafter explained, through the screen 3'. The fan 6 is driven by means of an electric motor 7, upon whose shaft it is mounted, 1

tosupport a rectangular wooden box 11,

which may be open at its front end and which has an outwardly-projecting back 12 'of pyramidal or equivalent sha e adapted to cause the current of air rope led against it by the fan 6 to be divided and deflected so as to pass around the top, bottom, and sides of the box 11 on its way to the front screen 3.

Within the box 11 (which-is made of a size suitable for the purpose) is placed a ste -up transformer 13, the box being movab e. in the fore-and-aft direction upon the rails 9, so that the distance of the rear end 12 of the box from the fan 6 may be adjusted as ma be found most suitable, and the Wei ht o the transformer serving to maintain t e box in the position wherein it may be set.

The electrodes over which the high-tension alternating current is led from the step-up transformer 13 are in the form of four separate panels A B C D ,fastened together so as to form a rectan lar structure open at the front and rear en s and mounted so as to extend longitudinally of the front compartment of the casing 1, the panels A B C D, which surround at a distance the top, bottom, and sides of the box 11 being supported about midway between said box and the outer casing 1, as indicated. The air thus finds its way from the fan 6 to the delivery;

IIO

fan-motor 7 alone.

sheets of gauze being securely held by their margins being clamped in grooves on the inner faces of the respective frames by means of strips of Wood 14? 15 The assemblage of panels A B C D may be detachably secured together in any convenient manneras, for example, by cords 16 bound around the four frames close to their front and rear ends, as shown, and the structure thus formed is suspended from the top of the casing- 1 by springs 17, which are themselves dependent from indie-rubber transformer 13 is converted into an alternat-.

ing current of higher voltage. 32 is a rheostat' or regulating-switch inter osed in the circuit between the motor-trans ormer 29 and the switch 20. It is mounted upon the casing 1 in convenient proximity to the switch 20 and serves, by regulating the current passed through the motor-transformer 29, to correspondingly vary the strength of the stream of ozone discharged from the apparatus.

The switch 20 has two operative positions, in the first of which (indicated by the dotted line at- 20, Fig. 3) it closes the circuit of the The fan being thus started, the switch 20 may be moved to the second or final position, (indicated by the dot ted line at 20,) wherein it closes the circuits of both thefan-motor 7 and the motor-transformer 29, the latter of which is thus permitted to start, but only at aslow speed, so long as the regulating-switch 32 is in position to I maintain a high resistance in the circuit. The re u'latingswltch 32 may then be adjusted at will,-so as to permit of any'desired increase in the speed of themotor-transformer 29 and in the output of-ozone;

It Wlll be obvious that the arrangement above described might .be simplified by male ing thefan-motor 7 serve the additional purpose of a transformer for converting the direct current into an alternating current, in which case the separate motor-transformer 29 would be dispensed with. The high-tension current from the step-up transformer 13 is distributed over the sheets of gauze 14 15, forming the panels A B C D, by means of conductors formed, preferably, of metal rods spanning the width of the panels, there being a pair 0 rods 21 22 extending across and in contact with the outer surface of each outer layer 14 of gauzeand a similar pair 23 24 eX- tending across and in contact with the inner surface of each inner layer 15. Current is led from one terminal 25 of the transformer by a wire 26 to'one end of the-first rod 21 on the outer sheet 14 of the first panel A, whence the current passes to the second rod 22 on the same outer sheet. From this the current is led by a wire to the first rod 21 of the outer sheet 14 of the second panel B, whence it passes to the second'rod- 22 on the same sheet, and so on with each panel. "The current is similarly led by a'wire from the other terminal 28 of the transformer 13 bya wire 27 to one end of the first rod 24 0nthe inner sheet 15 of the-first panel A, whence the current is led so as to traverse the inner sheets of the three remaining panels B, C, and D in a similar manner to that described above with ref erence to the outer sheets 14 of the panels. A silent or condenser discharge is thus caused to take place over the entire inner and'outer surface of each panel A B O D, the air pro pelled by the fan becoming ozonized in its passage over said surfaces on its way to the exit-screen 3.

It will be obvious that in cases where an alternating current is available the motortransformer 29 willnot be required, the alternating current being led from the source of supply direct to the step-up transformer 13.

I claim- 1. Apparatus for ozonizing atmospheric air by the silent discharge of a high-tension electric current comprising an outer casing forming a passage for' the air provided with ,an air-propelling fan; means for deflecting and guiding the current of air during the ozonizing operation, consisting of an inner casing serving to contain an electrical transformer; and aplurality of pairs of electrodes secured together to form a hollowstructure open at both ends and disposed between and at a distance from said inner and outer casings, the electrodes of each pair of electrodes having a dielectric between them, substantially as specified. p

2. A portable self-contained apparatus for ozonizing atmospheric air, consisting essentially of an outer casing inclosing an air-propelling fan; an electrical transformer; pairs of electrodes secured together and forming passages for the air to be ozonized, the electrodes of each pair of electrodes having a dielectric between them, and connections be tween the electrodes and transformer; said apparatus being provided at one end with a filter for the entering air and at the other end with an apertured screen serving to prevent access to the interior of the casing, substantially as described.

3. An apparatus for ozonizing atmospheric air by the silent discharge of a high-tension electric current, comprising an outer casing forming a passage for the air provided with an air-propelling fan, means for deflecting and guiding the current of air during the ITO ozonizing operation, consisting of an inner having a dielectric between tliein,and sprin 's casing serving to contain an electrical trans- Ilor supporting the open-ended elecirm e former, and a )lurality of pairs of electrodes structure, for the purpose s]')eeiliedi fastened to etirer to form a hollow structure i EDWARD LIONEL JOSEPH.

5 open at bot ll ends and disposed between and l Witnesses:

at a distance from said inner and outer casl H. l). JAMESON, ings, the electrodes of each pair of electrodes T. L. RAND. 

